The Project window displays all the files related to your Project and is the main way you can navigate and find assets and other project files in your application. When you start a new project, by default this window is open. However, if you can't find it, or it's closed, you can open it from the main menu > Window > General > Project or press Ctrl+5 (macOS: Cmd+5).

You can move the Project window by clicking dragging the top of the window. You can either dock it into place in the Editor, or drag it out of the Editor window to use it as a free-floating window. You can also change the layout of the window itself. To do this, select the More menu (⋮) in the top right of the window and choose from either One Column Layout or Two Column Layout. The Two Column Layout has an extra pane which shows a visual preview of each file.

The left panel of the browser shows the folder structure of the Project as a hierarchical list. When you select a folder from the list, Unity shows its contents in the pane to the right. You can click the small triangle to expand or collapse the folder, displaying any nested folders it contains. Hold down Alt while you click to expand or collapse any nested folders recursively.

Individual Assets are shown in the right hand panel as icons that indicate their type (for example, script, material, sub-folder). To resize the icons, use the slider at the bottom of the panel; they will be replaced by a hierarchical list view if the slider is moved to the extreme left. The space to the left of the slider shows the currently selected item, including a full path to the item if a search is being performed.

Above the Project structure list is a Favorites section where you can keep frequently-used items for easy access. You can drag items from the Project structure list to the Favorites and also save search queries there.

Along the top edge of the window is the browser's toolbar.

Search filters work by adding an extra term in the search text. A term beginning with filters by the specified asset type, while filters by label. You can type these terms directly into the search box rather than use the menu if you know what you are looking for. You can search for more than one type or label at once. Adding multiple types expands the search to include all specified types (that is, types are ORed together). Adding multiple labels also expands the search to include all specified types (that is, labels are ORed together). If you search for a type and a label, the search returns assets that match both the type and the label (that is, the labels and types are ANDed together).

The following keyboard shortcuts are available when the browser view has focus. Note that some of them only work when the view is using the two-column layout (you can switch between the one- and two-column layouts using the panel menu in the very top right corner).